/Engine/Source/Runtime/Engine/Classes/Kismet/KismetMathLibrary.h
Easeing between A and B using a specified easing function
static double Ease ( double A, double B, double Alpha, [TEnumAsByte](API\Runtime\Core\Containers\TEnumAsByte)< [EEasingFunc::Type](API\Runtime\Engine\Kismet\EEasingFunc__Type) > EasingFunc, double BlendExp, int32 Steps )